Optimizing Imaging Quality and Radiation Dose by the Age-Dependent Setting of Tube Voltage in Pediatric Chest Digital Radiography
Korean Journal of Radiology
;
: 126-131, 2013.
Article
Dans Anglais
| WPRIM
| ID: wpr-44583
ABSTRACT
OBJECTIVE:
The quality and radiation dose of different tube voltage sets for chest digital radiography (DR) were compared in a series of pediatric age groups. MATERIALS ANDMETHODS:
Forty-five hundred children aged 0-14 years (yr) were randomly divided into four groups according to the tube voltage protocols for chest DR lower kilovoltage potential (kVp) (A), intermediate kVp (B), and higher kVp (C) groups, and the fixed high kVp group (controls). The results were analyzed among five different age groups (0-1 yr, 1-3 yr, 3-7 yr, 7-11 yr and 11-14 yr). The dose area product (DAP) and visual grading analysis score (VGAS) were determined and compared by using one-way analysis of variance.RESULTS:
The mean DAP of protocol C was significantly lower as compared with protocols A, B and controls (p < 0.05). DAP was higher in protocol A than the controls (p <0.001), but it was not statistically significantly different between B and the controls (p = 0.976). Mean VGAS was lower in the controls than all three protocols (p < 0.001 for all). Mean VGAS did not differ between protocols A and B (p = 0.334), but was lower in protocol C than A (p = 0.008) and B (p = 0.049).CONCLUSION:
Protocol C (higher kVp) may help optimize the trade-off between radiation dose and image quality, and it may be acceptable for use in a pediatric age group from these results.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Pédiatrie
/
Dose de rayonnement
/
Radioprotection
/
Radiographie thoracique
/
Amélioration d'image radiographique
/
Études prospectives
/
Analyse de variance
/
Facteurs âges
Type d'étude:
Étude observationnelle
Limites du sujet:
Adolescent
/
Enfant
/
Enfant d'âge préscolaire
/
Humains
/
Bébé
/
Nouveau-né
langue:
Anglais
Texte intégral:
Korean Journal of Radiology
Année:
2013
Type:
Article
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